The efforts on energy system decarbonization and improved sustainable energy efficiency in developed countries led energy enthusiasts to explore alternative highly effective pathways in accomplishing these goals. Specifically, the transition from hydrocarbon to H₂ economy using fuel cells and H₂ technologies is a sustainable and favorable approach forward in meeting stationary, transportation, industrial, residential, and commercial sectors. This review in three Parts brings out the capability of H₂ for enabling an energy revolution through much-needed flexibility in renewable energy resources. The review identifies the developments and challenges within the H₂ generation, storage, transportation, distribution, and usage - as well as applications along with national and international initiatives in the field, all of which suggest a pathway for a greener H₂ society. The review also highlights the opportunities and challenges in major energy sectors for H₂ technologies. Part I of the series highlights the importance of H₂ economy and initiatives from various agencies, and presents several H₂ generation methods.

发达国家在能源系统脱碳和提高可持续能源效率方面的努力使能源爱好者探索实现这些目标的替代性高效途径。具体而言，使用燃料电池和H ₂技术从碳氢化合物经济过渡到H ₂经济是满足固定，交通，工业，住宅和商业领域的可持续且有利的方法。本文分为三部分，介绍了H ₂通过可再生能源的迫切需要而实现能源革命的能力。审查确定了H ₂的发展和挑战发电，存储，运输，分配和使用-以及在该领域的国家和国际计划的应用，所有这些都为绿色H ₂社会的发展指明了道路。审查还重点介绍了H ₂技术在主要能源领域的机遇和挑战。该系列的第一部分重点介绍了H ₂经济的重要性和各种机构的倡议，并介绍了几种H ₂产生方法。